Replace worn-out fittings with heavy-duty 316 stainless steel hardware. Accommodates 7/8" diameter tubing. 1-9/16" installation hole size. Sold individually. Whitecap Blue Water Hardware - Blue Water series products are designed for durability and constructed from quality materials. That is why Whitecap guarantees their products for life. 90° | Whitecap 90° Stainless Steel Flush-Mount Fuel Tank Vent in Blue